EP 1719314 B1 20170322 - Transmission method and apparatus in a multiple antenna communication system
Title (en)
Transmission method and apparatus in a multiple antenna communication system
Title (de)
Übertragunsverfahren und Vorrichtung in einem Kommunikationssystem mit mehreren Antennen
Title (fr)
Procédé de transmission et appareil dans un système de communication à plusieurs antennes
Publication
Application
Priority
- US 2005001413 W 20050114
- US 53969904 P 20040127
- US 99014304 A 20041116
Abstract (en)
[origin: US2005163236A1] A method and apparatus are disclosed for transmitting symbols in a multiple antenna communication system. The disclosed frame structure comprises a preamble having a plurality of long training symbols that are transmitted on a plurality transmit antennas. At least a portion of the frame is delayed on at least one transmit antenna. The disclosed frame formats of the present invention are backwards compatible to existing single antenna communication systems. The delay amount, D, can be approximately equal to one OFDM time sample period, T. The delayed version can be obtained by introducing a time delay into a signal on the delayed branch(es) or by cyclically shifting at least a portion of each frame on the delayed branch(es). The entire frame or only the preamble portion of each frame can be delayed.
IPC 8 full level
H04J 99/00 (2009.01); H04L 1/06 (2006.01); H04B 7/06 (2006.01); H04L 27/26 (2006.01)
CPC (source: EP KR US)
H04B 7/02 (2013.01 - KR); H04B 7/06 (2013.01 - KR); H04B 7/0671 (2013.01 - EP US); H04L 1/06 (2013.01 - EP US)
Designated contracting state (EPC)
DE GB
DOCDB simple family (publication)
US 2005163236 A1 20050728; US 8194771 B2 20120605; EP 1719314 A1 20061108; EP 1719314 B1 20170322; JP 2007520161 A 20070719; JP 4767868 B2 20110907; KR 101120316 B1 20120306; KR 20060131819 A 20061220; WO 2005074221 A1 20050811
DOCDB simple family (application)
US 99014304 A 20041116; EP 05722443 A 20050114; JP 2006551185 A 20050114; KR 20067015136 A 20060726; US 2005001413 W 20050114